Execution Flow

Once victim launches the Game that embedded with trojan it extracts resources and decrypts that and from there, after that, every time when a user connects to internet Trojan executes itself even though the game no longer launched.

The Trojan connects to C&C server to download all its dependencies and additional components it also downloads separate APK, DEX and ELF files and these files can be launched without user intention.

While installing the APK it shows a dialog box, if it has root access to phone it can process the installation silently. By having complete control over the device attacker can execute whatever commands they can do. They can install any third party applications, advertising modules are any other.

Security experts from Dr.web reported the behavior of Trojan component in SDK to Google and Android.DownLoader.558.origin is still available in play store.

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